/**
* Display the specified resource.
*
* @param int $id Semestre o grado
* @return Response
*/
public function toJson($id)
{
$semester = Semester::with('groups')->findOrFail($id);
$error = is_null($semester);
$message = $error ? "No se encontró el semestre." : "OKay";
return response()->json(array('error' => $error, 'semester' => $semester, 'message' => $message), 200)->header('Content-Type', "application/json; charset=utf-8")->header("Access-Control-Allow-Origin", "*");
}
